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Conference Paper
Polarization Holographic Gratings with Increased Diffraction Efficiency Recorded in Azopolymer PAZO doped with TiO2 Nanoparticles
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- Authors
- Dimana Nazarova, Elena Stoykova, Lian Nedelchev, Georgi Mateev, Blaga Blagoeva, Kwan-Jung Oh, Joongki Park
- Issue Date
- 2019-07
- Citation
- Optics and Photonics Congress 2019, pp.1-2
- Publisher
- Optical Society of Korea
- Language
- English
- Type
- Conference Paper
- Abstract
- We present comparison between diffraction efficiencies of polarization holographic gratings recorded in nondoped azopolymer and in a hybrid organic/inorganic thin layers of azopolymer with incorporated TiO 2 nanoparticles of size of 21 nm with different concentrations. The gratings are inscribed by two plain waves with left and right circular polarization from a He-Cd gas laser (442 nm) at recording angle 20°. Our experimental results indicate that highest diffraction efficiency is obtained for the sample with 1 wt % of nanoparticles.
- KSP Keywords
- Holographic gratings, Hybrid organic-inorganic, TiO2 nanoparticles, circular polarizations(CPs), diffraction efficiency, gas laser, thin layer